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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<span class="sourceLineNo">003</span> * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<span class="sourceLineNo">007</span> * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<span class="sourceLineNo">010</span> *<a name="line.10"></a>
<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<span class="sourceLineNo">014</span> * See the License for the specific language governing permissions and<a name="line.14"></a>
<span class="sourceLineNo">015</span> * limitations under the License.<a name="line.15"></a>
<span class="sourceLineNo">016</span> */<a name="line.16"></a>
<span class="sourceLineNo">017</span>package org.apache.commons.io;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.io.BufferedOutputStream;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.io.File;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.FileFilter;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.io.FileInputStream;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.io.FileNotFoundException;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.io.FileOutputStream;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.io.IOException;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.io.InputStream;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.io.InputStreamReader;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.io.OutputStream;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.io.Reader;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.io.UncheckedIOException;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.math.BigInteger;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.net.URL;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.net.URLConnection;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import java.nio.ByteBuffer;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import java.nio.charset.Charset;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import java.nio.charset.StandardCharsets;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import java.nio.charset.UnsupportedCharsetException;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import java.nio.file.CopyOption;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import java.nio.file.FileVisitOption;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import java.nio.file.Files;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import java.nio.file.LinkOption;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import java.nio.file.NotDirectoryException;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import java.nio.file.Path;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import java.nio.file.StandardCopyOption;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import java.time.Instant;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import java.time.LocalTime;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import java.time.ZoneId;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import java.time.chrono.ChronoLocalDate;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import java.time.chrono.ChronoLocalDateTime;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import java.time.chrono.ChronoZonedDateTime;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import java.util.ArrayList;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import java.util.Arrays;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import java.util.Collection;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import java.util.Collections;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import java.util.Date;<a name="line.55"></a>
<span class="sourceLineNo">056</span>import java.util.Iterator;<a name="line.56"></a>
<span class="sourceLineNo">057</span>import java.util.List;<a name="line.57"></a>
<span class="sourceLineNo">058</span>import java.util.Objects;<a name="line.58"></a>
<span class="sourceLineNo">059</span>import java.util.stream.Collectors;<a name="line.59"></a>
<span class="sourceLineNo">060</span>import java.util.stream.Stream;<a name="line.60"></a>
<span class="sourceLineNo">061</span>import java.util.zip.CRC32;<a name="line.61"></a>
<span class="sourceLineNo">062</span>import java.util.zip.CheckedInputStream;<a name="line.62"></a>
<span class="sourceLineNo">063</span>import java.util.zip.Checksum;<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>import org.apache.commons.io.file.AccumulatorPathVisitor;<a name="line.65"></a>
<span class="sourceLineNo">066</span>import org.apache.commons.io.file.Counters;<a name="line.66"></a>
<span class="sourceLineNo">067</span>import org.apache.commons.io.file.PathFilter;<a name="line.67"></a>
<span class="sourceLineNo">068</span>import org.apache.commons.io.file.PathUtils;<a name="line.68"></a>
<span class="sourceLineNo">069</span>import org.apache.commons.io.file.StandardDeleteOption;<a name="line.69"></a>
<span class="sourceLineNo">070</span>import org.apache.commons.io.filefilter.FileEqualsFileFilter;<a name="line.70"></a>
<span class="sourceLineNo">071</span>import org.apache.commons.io.filefilter.FileFileFilter;<a name="line.71"></a>
<span class="sourceLineNo">072</span>import org.apache.commons.io.filefilter.IOFileFilter;<a name="line.72"></a>
<span class="sourceLineNo">073</span>import org.apache.commons.io.filefilter.SuffixFileFilter;<a name="line.73"></a>
<span class="sourceLineNo">074</span>import org.apache.commons.io.filefilter.TrueFileFilter;<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span>/**<a name="line.76"></a>
<span class="sourceLineNo">077</span> * General file manipulation utilities.<a name="line.77"></a>
<span class="sourceLineNo">078</span> * &lt;p&gt;<a name="line.78"></a>
<span class="sourceLineNo">079</span> * Facilities are provided in the following areas:<a name="line.79"></a>
<span class="sourceLineNo">080</span> * &lt;/p&gt;<a name="line.80"></a>
<span class="sourceLineNo">081</span> * &lt;ul&gt;<a name="line.81"></a>
<span class="sourceLineNo">082</span> * &lt;li&gt;writing to a file<a name="line.82"></a>
<span class="sourceLineNo">083</span> * &lt;li&gt;reading from a file<a name="line.83"></a>
<span class="sourceLineNo">084</span> * &lt;li&gt;make a directory including parent directories<a name="line.84"></a>
<span class="sourceLineNo">085</span> * &lt;li&gt;copying files and directories<a name="line.85"></a>
<span class="sourceLineNo">086</span> * &lt;li&gt;deleting files and directories<a name="line.86"></a>
<span class="sourceLineNo">087</span> * &lt;li&gt;converting to and from a URL<a name="line.87"></a>
<span class="sourceLineNo">088</span> * &lt;li&gt;listing files and directories by filter and extension<a name="line.88"></a>
<span class="sourceLineNo">089</span> * &lt;li&gt;comparing file content<a name="line.89"></a>
<span class="sourceLineNo">090</span> * &lt;li&gt;file last changed date<a name="line.90"></a>
<span class="sourceLineNo">091</span> * &lt;li&gt;calculating a checksum<a name="line.91"></a>
<span class="sourceLineNo">092</span> * &lt;/ul&gt;<a name="line.92"></a>
<span class="sourceLineNo">093</span> * &lt;p&gt;<a name="line.93"></a>
<span class="sourceLineNo">094</span> * Note that a specific charset should be specified whenever possible. Relying on the platform default means that the<a name="line.94"></a>
<span class="sourceLineNo">095</span> * code is Locale-dependent. Only use the default if the files are known to always use the platform default.<a name="line.95"></a>
<span class="sourceLineNo">096</span> * &lt;/p&gt;<a name="line.96"></a>
<span class="sourceLineNo">097</span> * &lt;p&gt;<a name="line.97"></a>
<span class="sourceLineNo">098</span> * {@link SecurityException} are not documented in the Javadoc.<a name="line.98"></a>
<span class="sourceLineNo">099</span> * &lt;/p&gt;<a name="line.99"></a>
<span class="sourceLineNo">100</span> * &lt;p&gt;<a name="line.100"></a>
<span class="sourceLineNo">101</span> * Origin of code: Excalibur, Alexandria, Commons-Utils<a name="line.101"></a>
<span class="sourceLineNo">102</span> * &lt;/p&gt;<a name="line.102"></a>
<span class="sourceLineNo">103</span> */<a name="line.103"></a>
<span class="sourceLineNo">104</span>public class FileUtils {<a name="line.104"></a>
<span class="sourceLineNo">105</span>    /**<a name="line.105"></a>
<span class="sourceLineNo">106</span>     * The number of bytes in a kilobyte.<a name="line.106"></a>
<span class="sourceLineNo">107</span>     */<a name="line.107"></a>
<span class="sourceLineNo">108</span>    public static final long ONE_KB = 1024;<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>    /**<a name="line.110"></a>
<span class="sourceLineNo">111</span>     * The number of bytes in a kilobyte.<a name="line.111"></a>
<span class="sourceLineNo">112</span>     *<a name="line.112"></a>
<span class="sourceLineNo">113</span>     * @since 2.4<a name="line.113"></a>
<span class="sourceLineNo">114</span>     */<a name="line.114"></a>
<span class="sourceLineNo">115</span>    public static final BigInteger ONE_KB_BI = BigInteger.valueOf(ONE_KB);<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span>    /**<a name="line.117"></a>
<span class="sourceLineNo">118</span>     * The number of bytes in a megabyte.<a name="line.118"></a>
<span class="sourceLineNo">119</span>     */<a name="line.119"></a>
<span class="sourceLineNo">120</span>    public static final long ONE_MB = ONE_KB * ONE_KB;<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span>    /**<a name="line.122"></a>
<span class="sourceLineNo">123</span>     * The number of bytes in a megabyte.<a name="line.123"></a>
<span class="sourceLineNo">124</span>     *<a name="line.124"></a>
<span class="sourceLineNo">125</span>     * @since 2.4<a name="line.125"></a>
<span class="sourceLineNo">126</span>     */<a name="line.126"></a>
<span class="sourceLineNo">127</span>    public static final BigInteger ONE_MB_BI = ONE_KB_BI.multiply(ONE_KB_BI);<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
<span class="sourceLineNo">129</span>    /**<a name="line.129"></a>
<span class="sourceLineNo">130</span>     * The number of bytes in a gigabyte.<a name="line.130"></a>
<span class="sourceLineNo">131</span>     */<a name="line.131"></a>
<span class="sourceLineNo">132</span>    public static final long ONE_GB = ONE_KB * ONE_MB;<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span>    /**<a name="line.134"></a>
<span class="sourceLineNo">135</span>     * The number of bytes in a gigabyte.<a name="line.135"></a>
<span class="sourceLineNo">136</span>     *<a name="line.136"></a>
<span class="sourceLineNo">137</span>     * @since 2.4<a name="line.137"></a>
<span class="sourceLineNo">138</span>     */<a name="line.138"></a>
<span class="sourceLineNo">139</span>    public static final BigInteger ONE_GB_BI = ONE_KB_BI.multiply(ONE_MB_BI);<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span>    /**<a name="line.141"></a>
<span class="sourceLineNo">142</span>     * The number of bytes in a terabyte.<a name="line.142"></a>
<span class="sourceLineNo">143</span>     */<a name="line.143"></a>
<span class="sourceLineNo">144</span>    public static final long ONE_TB = ONE_KB * ONE_GB;<a name="line.144"></a>
<span class="sourceLineNo">145</span><a name="line.145"></a>
<span class="sourceLineNo">146</span>    /**<a name="line.146"></a>
<span class="sourceLineNo">147</span>     * The number of bytes in a terabyte.<a name="line.147"></a>
<span class="sourceLineNo">148</span>     *<a name="line.148"></a>
<span class="sourceLineNo">149</span>     * @since 2.4<a name="line.149"></a>
<span class="sourceLineNo">150</span>     */<a name="line.150"></a>
<span class="sourceLineNo">151</span>    public static final BigInteger ONE_TB_BI = ONE_KB_BI.multiply(ONE_GB_BI);<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span>    /**<a name="line.153"></a>
<span class="sourceLineNo">154</span>     * The number of bytes in a petabyte.<a name="line.154"></a>
<span class="sourceLineNo">155</span>     */<a name="line.155"></a>
<span class="sourceLineNo">156</span>    public static final long ONE_PB = ONE_KB * ONE_TB;<a name="line.156"></a>
<span class="sourceLineNo">157</span><a name="line.157"></a>
<span class="sourceLineNo">158</span>    /**<a name="line.158"></a>
<span class="sourceLineNo">159</span>     * The number of bytes in a petabyte.<a name="line.159"></a>
<span class="sourceLineNo">160</span>     *<a name="line.160"></a>
<span class="sourceLineNo">161</span>     * @since 2.4<a name="line.161"></a>
<span class="sourceLineNo">162</span>     */<a name="line.162"></a>
<span class="sourceLineNo">163</span>    public static final BigInteger ONE_PB_BI = ONE_KB_BI.multiply(ONE_TB_BI);<a name="line.163"></a>
<span class="sourceLineNo">164</span><a name="line.164"></a>
<span class="sourceLineNo">165</span>    /**<a name="line.165"></a>
<span class="sourceLineNo">166</span>     * The number of bytes in an exabyte.<a name="line.166"></a>
<span class="sourceLineNo">167</span>     */<a name="line.167"></a>
<span class="sourceLineNo">168</span>    public static final long ONE_EB = ONE_KB * ONE_PB;<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span>    /**<a name="line.170"></a>
<span class="sourceLineNo">171</span>     * The number of bytes in an exabyte.<a name="line.171"></a>
<span class="sourceLineNo">172</span>     *<a name="line.172"></a>
<span class="sourceLineNo">173</span>     * @since 2.4<a name="line.173"></a>
<span class="sourceLineNo">174</span>     */<a name="line.174"></a>
<span class="sourceLineNo">175</span>    public static final BigInteger ONE_EB_BI = ONE_KB_BI.multiply(ONE_PB_BI);<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span>    /**<a name="line.177"></a>
<span class="sourceLineNo">178</span>     * The number of bytes in a zettabyte.<a name="line.178"></a>
<span class="sourceLineNo">179</span>     */<a name="line.179"></a>
<span class="sourceLineNo">180</span>    public static final BigInteger ONE_ZB = BigInteger.valueOf(ONE_KB).multiply(BigInteger.valueOf(ONE_EB));<a name="line.180"></a>
<span class="sourceLineNo">181</span><a name="line.181"></a>
<span class="sourceLineNo">182</span>    /**<a name="line.182"></a>
<span class="sourceLineNo">183</span>     * The number of bytes in a yottabyte.<a name="line.183"></a>
<span class="sourceLineNo">184</span>     */<a name="line.184"></a>
<span class="sourceLineNo">185</span>    public static final BigInteger ONE_YB = ONE_KB_BI.multiply(ONE_ZB);<a name="line.185"></a>
<span class="sourceLineNo">186</span><a name="line.186"></a>
<span class="sourceLineNo">187</span>    /**<a name="line.187"></a>
<span class="sourceLineNo">188</span>     * An empty array of type {@code File}.<a name="line.188"></a>
<span class="sourceLineNo">189</span>     */<a name="line.189"></a>
<span class="sourceLineNo">190</span>    public static final File[] EMPTY_FILE_ARRAY = {};<a name="line.190"></a>
<span class="sourceLineNo">191</span><a name="line.191"></a>
<span class="sourceLineNo">192</span>    /**<a name="line.192"></a>
<span class="sourceLineNo">193</span>     * Copies the given array and adds StandardCopyOption.COPY_ATTRIBUTES.<a name="line.193"></a>
<span class="sourceLineNo">194</span>     *<a name="line.194"></a>
<span class="sourceLineNo">195</span>     * @param copyOptions sorted copy options.<a name="line.195"></a>
<span class="sourceLineNo">196</span>     * @return a new array.<a name="line.196"></a>
<span class="sourceLineNo">197</span>     */<a name="line.197"></a>
<span class="sourceLineNo">198</span>    private static CopyOption[] addCopyAttributes(final CopyOption... copyOptions) {<a name="line.198"></a>
<span class="sourceLineNo">199</span>        // Make a copy first since we don't want to sort the call site's version.<a name="line.199"></a>
<span class="sourceLineNo">200</span>        final CopyOption[] actual = Arrays.copyOf(copyOptions, copyOptions.length + 1);<a name="line.200"></a>
<span class="sourceLineNo">201</span>        Arrays.sort(actual, 0, copyOptions.length);<a name="line.201"></a>
<span class="sourceLineNo">202</span>        if (Arrays.binarySearch(copyOptions, 0, copyOptions.length, StandardCopyOption.COPY_ATTRIBUTES) &gt;= 0) {<a name="line.202"></a>
<span class="sourceLineNo">203</span>            return copyOptions;<a name="line.203"></a>
<span class="sourceLineNo">204</span>        }<a name="line.204"></a>
<span class="sourceLineNo">205</span>        actual[actual.length - 1] = StandardCopyOption.COPY_ATTRIBUTES;<a name="line.205"></a>
<span class="sourceLineNo">206</span>        return actual;<a name="line.206"></a>
<span class="sourceLineNo">207</span>    }<a name="line.207"></a>
<span class="sourceLineNo">208</span><a name="line.208"></a>
<span class="sourceLineNo">209</span>    /**<a name="line.209"></a>
<span class="sourceLineNo">210</span>     * Returns a human-readable version of the file size, where the input represents a specific number of bytes.<a name="line.210"></a>
<span class="sourceLineNo">211</span>     * &lt;p&gt;<a name="line.211"></a>
<span class="sourceLineNo">212</span>     * If the size is over 1GB, the size is returned as the number of whole GB, i.e. the size is rounded down to the<a name="line.212"></a>
<span class="sourceLineNo">213</span>     * nearest GB boundary.<a name="line.213"></a>
<span class="sourceLineNo">214</span>     * &lt;/p&gt;<a name="line.214"></a>
<span class="sourceLineNo">215</span>     * &lt;p&gt;<a name="line.215"></a>
<span class="sourceLineNo">216</span>     * Similarly for the 1MB and 1KB boundaries.<a name="line.216"></a>
<span class="sourceLineNo">217</span>     * &lt;/p&gt;<a name="line.217"></a>
<span class="sourceLineNo">218</span>     *<a name="line.218"></a>
<span class="sourceLineNo">219</span>     * @param size the number of bytes<a name="line.219"></a>
<span class="sourceLineNo">220</span>     * @return a human-readable display value (includes units - EB, PB, TB, GB, MB, KB or bytes)<a name="line.220"></a>
<span class="sourceLineNo">221</span>     * @throws NullPointerException if the given {@code BigInteger} is {@code null}.<a name="line.221"></a>
<span class="sourceLineNo">222</span>     * @see &lt;a href="https://issues.apache.org/jira/browse/IO-226"&gt;IO-226 - should the rounding be changed?&lt;/a&gt;<a name="line.222"></a>
<span class="sourceLineNo">223</span>     * @since 2.4<a name="line.223"></a>
<span class="sourceLineNo">224</span>     */<a name="line.224"></a>
<span class="sourceLineNo">225</span>    // See https://issues.apache.org/jira/browse/IO-226 - should the rounding be changed?<a name="line.225"></a>
<span class="sourceLineNo">226</span>    public static String byteCountToDisplaySize(final BigInteger size) {<a name="line.226"></a>
<span class="sourceLineNo">227</span>        Objects.requireNonNull(size, "size");<a name="line.227"></a>
<span class="sourceLineNo">228</span>        final String displaySize;<a name="line.228"></a>
<span class="sourceLineNo">229</span><a name="line.229"></a>
<span class="sourceLineNo">230</span>        if (size.divide(ONE_EB_BI).compareTo(BigInteger.ZERO) &gt; 0) {<a name="line.230"></a>
<span class="sourceLineNo">231</span>            displaySize = size.divide(ONE_EB_BI) + " EB";<a name="line.231"></a>
<span class="sourceLineNo">232</span>        } else if (size.divide(ONE_PB_BI).compareTo(BigInteger.ZERO) &gt; 0) {<a name="line.232"></a>
<span class="sourceLineNo">233</span>            displaySize = size.divide(ONE_PB_BI) + " PB";<a name="line.233"></a>
<span class="sourceLineNo">234</span>        } else if (size.divide(ONE_TB_BI).compareTo(BigInteger.ZERO) &gt; 0) {<a name="line.234"></a>
<span class="sourceLineNo">235</span>            displaySize = size.divide(ONE_TB_BI) + " TB";<a name="line.235"></a>
<span class="sourceLineNo">236</span>        } else if (size.divide(ONE_GB_BI).compareTo(BigInteger.ZERO) &gt; 0) {<a name="line.236"></a>
<span class="sourceLineNo">237</span>            displaySize = size.divide(ONE_GB_BI) + " GB";<a name="line.237"></a>
<span class="sourceLineNo">238</span>        } else if (size.divide(ONE_MB_BI).compareTo(BigInteger.ZERO) &gt; 0) {<a name="line.238"></a>
<span class="sourceLineNo">239</span>            displaySize = size.divide(ONE_MB_BI) + " MB";<a name="line.239"></a>
<span class="sourceLineNo">240</span>        } else if (size.divide(ONE_KB_BI).compareTo(BigInteger.ZERO) &gt; 0) {<a name="line.240"></a>
<span class="sourceLineNo">241</span>            displaySize = size.divide(ONE_KB_BI) + " KB";<a name="line.241"></a>
<span class="sourceLineNo">242</span>        } else {<a name="line.242"></a>
<span class="sourceLineNo">243</span>            displaySize = size + " bytes";<a name="line.243"></a>
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<span class="sourceLineNo">247</span><a name="line.247"></a>
<span class="sourceLineNo">248</span>    /**<a name="line.248"></a>
<span class="sourceLineNo">249</span>     * Returns a human-readable version of the file size, where the input represents a specific number of bytes.<a name="line.249"></a>
<span class="sourceLineNo">250</span>     * &lt;p&gt;<a name="line.250"></a>
<span class="sourceLineNo">251</span>     * If the size is over 1GB, the size is returned as the number of whole GB, i.e. the size is rounded down to the<a name="line.251"></a>
<span class="sourceLineNo">252</span>     * nearest GB boundary.<a name="line.252"></a>
<span class="sourceLineNo">253</span>     * &lt;/p&gt;<a name="line.253"></a>
<span class="sourceLineNo">254</span>     * &lt;p&gt;<a name="line.254"></a>
<span class="sourceLineNo">255</span>     * Similarly for the 1MB and 1KB boundaries.<a name="line.255"></a>
<span class="sourceLineNo">256</span>     * &lt;/p&gt;<a name="line.256"></a>
<span class="sourceLineNo">257</span>     *<a name="line.257"></a>
<span class="sourceLineNo">258</span>     * @param size the number of bytes<a name="line.258"></a>
<span class="sourceLineNo">259</span>     * @return a human-readable display value (includes units - EB, PB, TB, GB, MB, KB or bytes)<a name="line.259"></a>
<span class="sourceLineNo">260</span>     * @see &lt;a href="https://issues.apache.org/jira/browse/IO-226"&gt;IO-226 - should the rounding be changed?&lt;/a&gt;<a name="line.260"></a>
<span class="sourceLineNo">261</span>     */<a name="line.261"></a>
<span class="sourceLineNo">262</span>    // See https://issues.apache.org/jira/browse/IO-226 - should the rounding be changed?<a name="line.262"></a>
<span class="sourceLineNo">263</span>    public static String byteCountToDisplaySize(final long size) {<a name="line.263"></a>
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<span class="sourceLineNo">266</span><a name="line.266"></a>
<span class="sourceLineNo">267</span>    /**<a name="line.267"></a>
<span class="sourceLineNo">268</span>     * Computes the checksum of a file using the specified checksum object. Multiple files may be checked using one<a name="line.268"></a>
<span class="sourceLineNo">269</span>     * {@code Checksum} instance if desired simply by reusing the same checksum object. For example:<a name="line.269"></a>
<span class="sourceLineNo">270</span>     *<a name="line.270"></a>
<span class="sourceLineNo">271</span>     * &lt;pre&gt;<a name="line.271"></a>
<span class="sourceLineNo">272</span>     * long checksum = FileUtils.checksum(file, new CRC32()).getValue();<a name="line.272"></a>
<span class="sourceLineNo">273</span>     * &lt;/pre&gt;<a name="line.273"></a>
<span class="sourceLineNo">274</span>     *<a name="line.274"></a>
<span class="sourceLineNo">275</span>     * @param file the file to checksum, must not be {@code null}<a name="line.275"></a>
<span class="sourceLineNo">276</span>     * @param checksum the checksum object to be used, must not be {@code null}<a name="line.276"></a>
<span class="sourceLineNo">277</span>     * @return the checksum specified, updated with the content of the file<a name="line.277"></a>
<span class="sourceLineNo">278</span>     * @throws NullPointerException if the given {@code File} is {@code null}.<a name="line.278"></a>
<span class="sourceLineNo">279</span>     * @throws NullPointerException if the given {@code Checksum} is {@code null}.<a name="line.279"></a>
<span class="sourceLineNo">280</span>     * @throws IllegalArgumentException if the given {@code File} does not exist or is not a file.<a name="line.280"></a>
<span class="sourceLineNo">281</span>     * @throws IOException if an IO error occurs reading the file.<a name="line.281"></a>
<span class="sourceLineNo">282</span>     * @since 1.3<a name="line.282"></a>
<span class="sourceLineNo">283</span>     */<a name="line.283"></a>
<span class="sourceLineNo">284</span>    public static Checksum checksum(final File file, final Checksum checksum) throws IOException {<a name="line.284"></a>
<span class="sourceLineNo">285</span>        requireExistsChecked(file, "file");<a name="line.285"></a>
<span class="sourceLineNo">286</span>        requireFile(file, "file");<a name="line.286"></a>
<span class="sourceLineNo">287</span>        Objects.requireNonNull(checksum, "checksum");<a name="line.287"></a>
<span class="sourceLineNo">288</span>        try (InputStream inputStream = new CheckedInputStream(Files.newInputStream(file.toPath()), checksum)) {<a name="line.288"></a>
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<span class="sourceLineNo">294</span>    /**<a name="line.294"></a>
<span class="sourceLineNo">295</span>     * Computes the checksum of a file using the CRC32 checksum routine.<a name="line.295"></a>
<span class="sourceLineNo">296</span>     * The value of the checksum is returned.<a name="line.296"></a>
<span class="sourceLineNo">297</span>     *<a name="line.297"></a>
<span class="sourceLineNo">298</span>     * @param file the file to checksum, must not be {@code null}<a name="line.298"></a>
<span class="sourceLineNo">299</span>     * @return the checksum value<a name="line.299"></a>
<span class="sourceLineNo">300</span>     * @throws NullPointerException if the given {@code File} is {@code null}.<a name="line.300"></a>
<span class="sourceLineNo">301</span>     * @throws IllegalArgumentException if the given {@code File} does not exist or is not a file.<a name="line.301"></a>
<span class="sourceLineNo">302</span>     * @throws IOException              if an IO error occurs reading the file.<a name="line.302"></a>
<span class="sourceLineNo">303</span>     * @since 1.3<a name="line.303"></a>
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<span class="sourceLineNo">309</span>    /**<a name="line.309"></a>
<span class="sourceLineNo">310</span>     * Cleans a directory without deleting it.<a name="line.310"></a>
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<span class="sourceLineNo">312</span>     * @param directory directory to clean<a name="line.312"></a>
<span class="sourceLineNo">313</span>     * @throws NullPointerException if the given {@code File} is {@code null}.<a name="line.313"></a>
<span class="sourceLineNo">314</span>     * @throws IllegalArgumentException if directory does not exist or is not a directory.<a name="line.314"></a>
<span class="sourceLineNo">315</span>     * @throws IOException if an I/O error occurs.<a name="line.315"></a>
<span class="sourceLineNo">316</span>     * @see #forceDelete(File)<a name="line.316"></a>
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<span class="sourceLineNo">335</span>    /**<a name="line.335"></a>
<span class="sourceLineNo">336</span>     * Cleans a directory without deleting it.<a name="line.336"></a>
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<span class="sourceLineNo">338</span>     * @param directory directory to clean, must not be {@code null}<a name="line.338"></a>
<span class="sourceLineNo">339</span>     * @throws NullPointerException if the given {@code File} is {@code null}.<a name="line.339"></a>
<span class="sourceLineNo">340</span>     * @throws IllegalArgumentException if directory does not exist or is not a directory.<a name="line.340"></a>
<span class="sourceLineNo">341</span>     * @throws IOException if an I/O error occurs.<a name="line.341"></a>
<span class="sourceLineNo">342</span>     * @see #forceDeleteOnExit(File)<a name="line.342"></a>
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<span class="sourceLineNo">361</span>    /**<a name="line.361"></a>
<span class="sourceLineNo">362</span>     * Tests whether the contents of two files are equal.<a name="line.362"></a>
<span class="sourceLineNo">363</span>     * &lt;p&gt;<a name="line.363"></a>
<span class="sourceLineNo">364</span>     * This method checks to see if the two files are different lengths or if they point to the same file, before<a name="line.364"></a>
<span class="sourceLineNo">365</span>     * resorting to byte-by-byte comparison of the contents.<a name="line.365"></a>
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<span class="sourceLineNo">367</span>     * &lt;p&gt;<a name="line.367"></a>
<span class="sourceLineNo">368</span>     * Code origin: Avalon<a name="line.368"></a>
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<span class="sourceLineNo">374</span>     * @throws IllegalArgumentException when an input is not a file.<a name="line.374"></a>
<span class="sourceLineNo">375</span>     * @throws IOException If an I/O error occurs.<a name="line.375"></a>
<span class="sourceLineNo">376</span>     * @see org.apache.commons.io.file.PathUtils#fileContentEquals(Path,Path,java.nio.file.LinkOption[],java.nio.file.OpenOption...)<a name="line.376"></a>
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<span class="sourceLineNo">379</span>        if (file1 == null &amp;&amp; file2 == null) {<a name="line.379"></a>
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<span class="sourceLineNo">395</span>        requireFile(file1, "file1");<a name="line.395"></a>
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<span class="sourceLineNo">414</span>     * Compares the contents of two files to determine if they are equal or not.<a name="line.414"></a>
<span class="sourceLineNo">415</span>     * &lt;p&gt;<a name="line.415"></a>
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<span class="sourceLineNo">428</span>     * @throws UnsupportedCharsetException If the named charset is unavailable (unchecked exception).<a name="line.428"></a>
<span class="sourceLineNo">429</span>     * @see IOUtils#contentEqualsIgnoreEOL(Reader, Reader)<a name="line.429"></a>
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<span class="sourceLineNo">431</span>     */<a name="line.431"></a>
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<span class="sourceLineNo">467</span>     * representation. This is to account for the difference between<a name="line.467"></a>
<span class="sourceLineNo">468</span>     * File.listFiles() and FileUtils.listFiles().<a name="line.468"></a>
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<span class="sourceLineNo">482</span>     * &lt;/p&gt;<a name="line.482"></a>
<span class="sourceLineNo">483</span>     * &lt;p&gt;<a name="line.483"></a>
<span class="sourceLineNo">484</span>     * The destination directory is created if it does not exist. If the destination directory did exist, then this<a name="line.484"></a>
<span class="sourceLineNo">485</span>     * method merges the source with the destination, with the source taking precedence.<a name="line.485"></a>
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<span class="sourceLineNo">487</span>     * &lt;p&gt;<a name="line.487"></a>
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<span class="sourceLineNo">490</span>     * modification operation fails, the methods throws IOException.<a name="line.490"></a>
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<span class="sourceLineNo">504</span><a name="line.504"></a>
<span class="sourceLineNo">505</span>    /**<a name="line.505"></a>
<span class="sourceLineNo">506</span>     * Copies a whole directory to a new location.<a name="line.506"></a>
<span class="sourceLineNo">507</span>     * &lt;p&gt;<a name="line.507"></a>
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<span class="sourceLineNo">510</span>     * &lt;p&gt;<a name="line.510"></a>
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<span class="sourceLineNo">514</span>     * &lt;p&gt;<a name="line.514"></a>
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<span class="sourceLineNo">516</span>     * modified date/times using {@link File#setLastModified(long)}, however it is not guaranteed that those operations<a name="line.516"></a>
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<span class="sourceLineNo">522</span>     * @param preserveFileDate true if the file date of the copy should be the same as the original.<a name="line.522"></a>
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<span class="sourceLineNo">524</span>     * @throws IllegalArgumentException if the source or destination is invalid.<a name="line.524"></a>
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<span class="sourceLineNo">527</span>     * @since 1.1<a name="line.527"></a>
<span class="sourceLineNo">528</span>     */<a name="line.528"></a>
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<span class="sourceLineNo">533</span><a name="line.533"></a>
<span class="sourceLineNo">534</span>    /**<a name="line.534"></a>
<span class="sourceLineNo">535</span>     * Copies a filtered directory to a new location preserving the file dates.<a name="line.535"></a>
<span class="sourceLineNo">536</span>     * &lt;p&gt;<a name="line.536"></a>
<span class="sourceLineNo">537</span>     * This method copies the contents of the specified source directory to within the specified destination directory.<a name="line.537"></a>
<span class="sourceLineNo">538</span>     * &lt;/p&gt;<a name="line.538"></a>
<span class="sourceLineNo">539</span>     * &lt;p&gt;<a name="line.539"></a>
<span class="sourceLineNo">540</span>     * The destination directory is created if it does not exist. If the destination directory did exist, then this<a name="line.540"></a>
<span class="sourceLineNo">541</span>     * method merges the source with the destination, with the source taking precedence.<a name="line.541"></a>
<span class="sourceLineNo">542</span>     * &lt;/p&gt;<a name="line.542"></a>
<span class="sourceLineNo">543</span>     * &lt;p&gt;<a name="line.543"></a>
<span class="sourceLineNo">544</span>     * &lt;strong&gt;Note:&lt;/strong&gt; This method tries to preserve the files' last modified date/times using<a name="line.544"></a>
<span class="sourceLineNo">545</span>     * {@link File#setLastModified(long)}, however it is not guaranteed that those operations will succeed. If the<a name="line.545"></a>
<span class="sourceLineNo">546</span>     * modification operation fails, the methods throws IOException.<a name="line.546"></a>
<span class="sourceLineNo">547</span>     * &lt;/p&gt;<a name="line.547"></a>
<span class="sourceLineNo">548</span>     * &lt;b&gt;Example: Copy directories only&lt;/b&gt;<a name="line.548"></a>
<span class="sourceLineNo">549</span>     *<a name="line.549"></a>
<span class="sourceLineNo">550</span>     * &lt;pre&gt;<a name="line.550"></a>
<span class="sourceLineNo">551</span>     * // only copy the directory structure<a name="line.551"></a>
<span class="sourceLineNo">552</span>     * FileUtils.copyDirectory(srcDir, destDir, DirectoryFileFilter.DIRECTORY);<a name="line.552"></a>
<span class="sourceLineNo">553</span>     * &lt;/pre&gt;<a name="line.553"></a>
<span class="sourceLineNo">554</span>     *<a name="line.554"></a>
<span class="sourceLineNo">555</span>     * &lt;b&gt;Example: Copy directories and txt files&lt;/b&gt;<a name="line.555"></a>
<span class="sourceLineNo">556</span>     *<a name="line.556"></a>
<span class="sourceLineNo">557</span>     * &lt;pre&gt;<a name="line.557"></a>
<span class="sourceLineNo">558</span>     * // Create a filter for ".txt" files<a name="line.558"></a>
<span class="sourceLineNo">559</span>     * IOFileFilter txtSuffixFilter = FileFilterUtils.suffixFileFilter(".txt");<a name="line.559"></a>
<span class="sourceLineNo">560</span>     * IOFileFilter txtFiles = FileFilterUtils.andFileFilter(FileFileFilter.FILE, txtSuffixFilter);<a name="line.560"></a>
<span class="sourceLineNo">561</span>     *<a name="line.561"></a>
<span class="sourceLineNo">562</span>     * // Create a filter for either directories or ".txt" files<a name="line.562"></a>
<span class="sourceLineNo">563</span>     * FileFilter filter = FileFilterUtils.orFileFilter(DirectoryFileFilter.DIRECTORY, txtFiles);<a name="line.563"></a>
<span class="sourceLineNo">564</span>     *<a name="line.564"></a>
<span class="sourceLineNo">565</span>     * // Copy using the filter<a name="line.565"></a>
<span class="sourceLineNo">566</span>     * FileUtils.copyDirectory(srcDir, destDir, filter);<a name="line.566"></a>
<span class="sourceLineNo">567</span>     * &lt;/pre&gt;<a name="line.567"></a>
<span class="sourceLineNo">568</span>     *<a name="line.568"></a>
<span class="sourceLineNo">569</span>     * @param srcDir an existing directory to copy, must not be {@code null}.<a name="line.569"></a>
<span class="sourceLineNo">570</span>     * @param destDir the new directory, must not be {@code null}.<a name="line.570"></a>
<span class="sourceLineNo">571</span>     * @param filter the filter to apply, null means copy all directories and files should be the same as the original.<a name="line.571"></a>
<span class="sourceLineNo">572</span>     * @throws NullPointerException if any of the given {@code File}s are {@code null}.<a name="line.572"></a>
<span class="sourceLineNo">573</span>     * @throws IllegalArgumentException if the source or destination is invalid.<a name="line.573"></a>
<span class="sourceLineNo">574</span>     * @throws FileNotFoundException if the source does not exist.<a name="line.574"></a>
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<span class="sourceLineNo">576</span>     * @since 1.4<a name="line.576"></a>
<span class="sourceLineNo">577</span>     */<a name="line.577"></a>
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<span class="sourceLineNo">579</span>        throws IOException {<a name="line.579"></a>
<span class="sourceLineNo">580</span>        copyDirectory(srcDir, destDir, filter, true);<a name="line.580"></a>
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<span class="sourceLineNo">583</span>    /**<a name="line.583"></a>
<span class="sourceLineNo">584</span>     * Copies a filtered directory to a new location.<a name="line.584"></a>
<span class="sourceLineNo">585</span>     * &lt;p&gt;<a name="line.585"></a>
<span class="sourceLineNo">586</span>     * This method copies the contents of the specified source directory to within the specified destination directory.<a name="line.586"></a>
<span class="sourceLineNo">587</span>     * &lt;/p&gt;<a name="line.587"></a>
<span class="sourceLineNo">588</span>     * &lt;p&gt;<a name="line.588"></a>
<span class="sourceLineNo">589</span>     * The destination directory is created if it does not exist. If the destination directory did exist, then this<a name="line.589"></a>
<span class="sourceLineNo">590</span>     * method merges the source with the destination, with the source taking precedence.<a name="line.590"></a>
<span class="sourceLineNo">591</span>     * &lt;/p&gt;<a name="line.591"></a>
<span class="sourceLineNo">592</span>     * &lt;p&gt;<a name="line.592"></a>
<span class="sourceLineNo">593</span>     * &lt;strong&gt;Note:&lt;/strong&gt; Setting {@code preserveFileDate} to {@code true} tries to preserve the files' last<a name="line.593"></a>
<span class="sourceLineNo">594</span>     * modified date/times using {@link File#setLastModified(long)}, however it is not guaranteed that those operations<a name="line.594"></a>
<span class="sourceLineNo">595</span>     * will succeed. If the modification operation fails, the methods throws IOException.<a name="line.595"></a>
<span class="sourceLineNo">596</span>     * &lt;/p&gt;<a name="line.596"></a>
<span class="sourceLineNo">597</span>     * &lt;b&gt;Example: Copy directories only&lt;/b&gt;<a name="line.597"></a>
<span class="sourceLineNo">598</span>     *<a name="line.598"></a>
<span class="sourceLineNo">599</span>     * &lt;pre&gt;<a name="line.599"></a>
<span class="sourceLineNo">600</span>     * // only copy the directory structure<a name="line.600"></a>
<span class="sourceLineNo">601</span>     * FileUtils.copyDirectory(srcDir, destDir, DirectoryFileFilter.DIRECTORY, false);<a name="line.601"></a>
<span class="sourceLineNo">602</span>     * &lt;/pre&gt;<a name="line.602"></a>
<span class="sourceLineNo">603</span>     *<a name="line.603"></a>
<span class="sourceLineNo">604</span>     * &lt;b&gt;Example: Copy directories and txt files&lt;/b&gt;<a name="line.604"></a>
<span class="sourceLineNo">605</span>     *<a name="line.605"></a>
<span class="sourceLineNo">606</span>     * &lt;pre&gt;<a name="line.606"></a>
<span class="sourceLineNo">607</span>     * // Create a filter for ".txt" files<a name="line.607"></a>
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<span class="sourceLineNo">609</span>     * IOFileFilter txtFiles = FileFilterUtils.andFileFilter(FileFileFilter.FILE, txtSuffixFilter);<a name="line.609"></a>
<span class="sourceLineNo">610</span>     *<a name="line.610"></a>
<span class="sourceLineNo">611</span>     * // Create a filter for either directories or ".txt" files<a name="line.611"></a>
<span class="sourceLineNo">612</span>     * FileFilter filter = FileFilterUtils.orFileFilter(DirectoryFileFilter.DIRECTORY, txtFiles);<a name="line.612"></a>
<span class="sourceLineNo">613</span>     *<a name="line.613"></a>
<span class="sourceLineNo">614</span>     * // Copy using the filter<a name="line.614"></a>
<span class="sourceLineNo">615</span>     * FileUtils.copyDirectory(srcDir, destDir, filter, false);<a name="line.615"></a>
<span class="sourceLineNo">616</span>     * &lt;/pre&gt;<a name="line.616"></a>
<span class="sourceLineNo">617</span>     *<a name="line.617"></a>
<span class="sourceLineNo">618</span>     * @param srcDir an existing directory to copy, must not be {@code null}.<a name="line.618"></a>
<span class="sourceLineNo">619</span>     * @param destDir the new directory, must not be {@code null}.<a name="line.619"></a>
<span class="sourceLineNo">620</span>     * @param filter the filter to apply, null means copy all directories and files.<a name="line.620"></a>
<span class="sourceLineNo">621</span>     * @param preserveFileDate true if the file date of the copy should be the same as the original.<a name="line.621"></a>
<span class="sourceLineNo">622</span>     * @throws NullPointerException if any of the given {@code File}s are {@code null}.<a name="line.622"></a>
<span class="sourceLineNo">623</span>     * @throws IllegalArgumentException if the source or destination is invalid.<a name="line.623"></a>
<span class="sourceLineNo">624</span>     * @throws FileNotFoundException if the source does not exist.<a name="line.624"></a>
<span class="sourceLineNo">625</span>     * @throws IOException if an error occurs or setting the last-modified time didn't succeeded.<a name="line.625"></a>
<span class="sourceLineNo">626</span>     * @since 1.4<a name="line.626"></a>
<span class="sourceLineNo">627</span>     */<a name="line.627"></a>
<span class="sourceLineNo">628</span>    public static void copyDirectory(final File srcDir, final File destDir, final FileFilter filter,<a name="line.628"></a>
<span class="sourceLineNo">629</span>        final boolean preserveFileDate) throws IOException {<a name="line.629"></a>
<span class="sourceLineNo">630</span>        copyDirectory(srcDir, destDir, filter, preserveFileDate, StandardCopyOption.REPLACE_EXISTING);<a name="line.630"></a>
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<span class="sourceLineNo">632</span><a name="line.632"></a>
<span class="sourceLineNo">633</span>    /**<a name="line.633"></a>
<span class="sourceLineNo">634</span>     * Copies a filtered directory to a new location.<a name="line.634"></a>
<span class="sourceLineNo">635</span>     * &lt;p&gt;<a name="line.635"></a>
<span class="sourceLineNo">636</span>     * This method copies the contents of the specified source directory to within the specified destination directory.<a name="line.636"></a>
<span class="sourceLineNo">637</span>     * &lt;/p&gt;<a name="line.637"></a>
<span class="sourceLineNo">638</span>     * &lt;p&gt;<a name="line.638"></a>
<span class="sourceLineNo">639</span>     * The destination directory is created if it does not exist. If the destination directory did exist, then this<a name="line.639"></a>
<span class="sourceLineNo">640</span>     * method merges the source with the destination, with the source taking precedence.<a name="line.640"></a>
<span class="sourceLineNo">641</span>     * &lt;/p&gt;<a name="line.641"></a>
<span class="sourceLineNo">642</span>     * &lt;p&gt;<a name="line.642"></a>
<span class="sourceLineNo">643</span>     * &lt;strong&gt;Note:&lt;/strong&gt; Setting {@code preserveFileDate} to {@code true} tries to preserve the files' last<a name="line.643"></a>
<span class="sourceLineNo">644</span>     * modified date/times using {@link File#setLastModified(long)}, however it is not guaranteed that those operations<a name="line.644"></a>
<span class="sourceLineNo">645</span>     * will succeed. If the modification operation fails, the methods throws IOException.<a name="line.645"></a>
<span class="sourceLineNo">646</span>     * &lt;/p&gt;<a name="line.646"></a>
<span class="sourceLineNo">647</span>     * &lt;b&gt;Example: Copy directories only&lt;/b&gt;<a name="line.647"></a>
<span class="sourceLineNo">648</span>     *<a name="line.648"></a>
<span class="sourceLineNo">649</span>     * &lt;pre&gt;<a name="line.649"></a>
<span class="sourceLineNo">650</span>     * // only copy the directory structure<a name="line.650"></a>
<span class="sourceLineNo">651</span>     * FileUtils.copyDirectory(srcDir, destDir, DirectoryFileFilter.DIRECTORY, false);<a name="line.651"></a>
<span class="sourceLineNo">652</span>     * &lt;/pre&gt;<a name="line.652"></a>
<span class="sourceLineNo">653</span>     *<a name="line.653"></a>
<span class="sourceLineNo">654</span>     * &lt;b&gt;Example: Copy directories and txt files&lt;/b&gt;<a name="line.654"></a>
<span class="sourceLineNo">655</span>     *<a name="line.655"></a>
<span class="sourceLineNo">656</span>     * &lt;pre&gt;<a name="line.656"></a>
<span class="sourceLineNo">657</span>     * // Create a filter for ".txt" files<a name="line.657"></a>
<span class="sourceLineNo">658</span>     * IOFileFilter txtSuffixFilter = FileFilterUtils.suffixFileFilter(".txt");<a name="line.658"></a>
<span class="sourceLineNo">659</span>     * IOFileFilter txtFiles = FileFilterUtils.andFileFilter(FileFileFilter.FILE, txtSuffixFilter);<a name="line.659"></a>
<span class="sourceLineNo">660</span>     *<a name="line.660"></a>
<span class="sourceLineNo">661</span>     * // Create a filter for either directories or ".txt" files<a name="line.661"></a>
<span class="sourceLineNo">662</span>     * FileFilter filter = FileFilterUtils.orFileFilter(DirectoryFileFilter.DIRECTORY, txtFiles);<a name="line.662"></a>
<span class="sourceLineNo">663</span>     *<a name="line.663"></a>
<span class="sourceLineNo">664</span>     * // Copy using the filter<a name="line.664"></a>
<span class="sourceLineNo">665</span>     * FileUtils.copyDirectory(srcDir, destDir, filter, false);<a name="line.665"></a>
<span class="sourceLineNo">666</span>     * &lt;/pre&gt;<a name="line.666"></a>
<span class="sourceLineNo">667</span>     *<a name="line.667"></a>
<span class="sourceLineNo">668</span>     * @param srcDir an existing directory to copy, must not be {@code null}<a name="line.668"></a>
<span class="sourceLineNo">669</span>     * @param destDir the new directory, must not be {@code null}<a name="line.669"></a>
<span class="sourceLineNo">670</span>     * @param fileFilter the filter to apply, null means copy all directories and files<a name="line.670"></a>
<span class="sourceLineNo">671</span>     * @param preserveFileDate true if the file date of the copy should be the same as the original<a name="line.671"></a>
<span class="sourceLineNo">672</span>     * @param copyOptions options specifying how the copy should be done, for example {@link StandardCopyOption}.<a name="line.672"></a>
<span class="sourceLineNo">673</span>     * @throws NullPointerException if any of the given {@code File}s are {@code null}.<a name="line.673"></a>
<span class="sourceLineNo">674</span>     * @throws IllegalArgumentException if the source or destination is invalid.<a name="line.674"></a>
<span class="sourceLineNo">675</span>     * @throws FileNotFoundException if the source does not exist.<a name="line.675"></a>
<span class="sourceLineNo">676</span>     * @throws IOException if an error occurs or setting the last-modified time didn't succeeded.<a name="line.676"></a>
<span class="sourceLineNo">677</span>     * @since 2.8.0<a name="line.677"></a>
<span class="sourceLineNo">678</span>     */<a name="line.678"></a>
<span class="sourceLineNo">679</span>    public static void copyDirectory(final File srcDir, final File destDir, final FileFilter fileFilter,<a name="line.679"></a>
<span class="sourceLineNo">680</span>        final boolean preserveFileDate, final CopyOption... copyOptions) throws IOException {<a name="line.680"></a>
<span class="sourceLineNo">681</span>        requireFileCopy(srcDir, destDir);<a name="line.681"></a>
<span class="sourceLineNo">682</span>        requireDirectory(srcDir, "srcDir");<a name="line.682"></a>
<span class="sourceLineNo">683</span>        requireCanonicalPathsNotEquals(srcDir, destDir);<a name="line.683"></a>
<span class="sourceLineNo">684</span><a name="line.684"></a>
<span class="sourceLineNo">685</span>        // Cater for destination being directory within the source directory (see IO-141)<a name="line.685"></a>
<span class="sourceLineNo">686</span>        List&lt;String&gt; exclusionList = null;<a name="line.686"></a>
<span class="sourceLineNo">687</span>        final String srcDirCanonicalPath = srcDir.getCanonicalPath();<a name="line.687"></a>
<span class="sourceLineNo">688</span>        final String destDirCanonicalPath = destDir.getCanonicalPath();<a name="line.688"></a>
<span class="sourceLineNo">689</span>        if (destDirCanonicalPath.startsWith(srcDirCanonicalPath)) {<a name="line.689"></a>
<span class="sourceLineNo">690</span>            final File[] srcFiles = listFiles(srcDir, fileFilter);<a name="line.690"></a>
<span class="sourceLineNo">691</span>            if (srcFiles.length &gt; 0) {<a name="line.691"></a>
<span class="sourceLineNo">692</span>                exclusionList = new ArrayList&lt;&gt;(srcFiles.length);<a name="line.692"></a>
<span class="sourceLineNo">693</span>                for (final File srcFile : srcFiles) {<a name="line.693"></a>
<span class="sourceLineNo">694</span>                    final File copiedFile = new File(destDir, srcFile.getName());<a name="line.694"></a>
<span class="sourceLineNo">695</span>                    exclusionList.add(copiedFile.getCanonicalPath());<a name="line.695"></a>
<span class="sourceLineNo">696</span>                }<a name="line.696"></a>
<span class="sourceLineNo">697</span>            }<a name="line.697"></a>
<span class="sourceLineNo">698</span>        }<a name="line.698"></a>
<span class="sourceLineNo">699</span>        doCopyDirectory(srcDir, destDir, fileFilter, exclusionList,<a name="line.699"></a>
<span class="sourceLineNo">700</span>            preserveFileDate, preserveFileDate ? addCopyAttributes(copyOptions) : copyOptions);<a name="line.700"></a>
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<span class="sourceLineNo">702</span><a name="line.702"></a>
<span class="sourceLineNo">703</span>    /**<a name="line.703"></a>
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<span class="sourceLineNo">706</span>     * This method copies the source directory and all its contents to a directory of the same name in the specified<a name="line.706"></a>
<span class="sourceLineNo">707</span>     * destination directory.<a name="line.707"></a>
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<span class="sourceLineNo">716</span>     * modification operation fails, the methods throws IOException.<a name="line.716"></a>
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<span class="sourceLineNo">725</span>     * @since 1.2<a name="line.725"></a>
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<span class="sourceLineNo">730</span>        copyDirectory(sourceDir, new File(destinationDir, sourceDir.getName()), true);<a name="line.730"></a>
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<span class="sourceLineNo">735</span>     * &lt;p&gt;<a name="line.735"></a>
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<span class="sourceLineNo">737</span>     * holding the destination file is created if it does not exist. If the destination file exists, then this method<a name="line.737"></a>
<span class="sourceLineNo">738</span>     * will overwrite it.<a name="line.738"></a>
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<span class="sourceLineNo">742</span>     * {@link File#setLastModified(long)}, however it is not guaranteed that the operation will succeed. If the<a name="line.742"></a>
<span class="sourceLineNo">743</span>     * modification operation fails, the methods throws IOException.<a name="line.743"></a>
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<span class="sourceLineNo">752</span>     * @see #copyFileToDirectory(File, File)<a name="line.752"></a>
<span class="sourceLineNo">753</span>     * @see #copyFile(File, File, boolean)<a name="line.753"></a>
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<span class="sourceLineNo">764</span>     * will overwrite it.<a name="line.764"></a>
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<span class="sourceLineNo">766</span>     * &lt;p&gt;<a name="line.766"></a>
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<span class="sourceLineNo">785</span>                ? new CopyOption[] {StandardCopyOption.COPY_ATTRIBUTES, StandardCopyOption.REPLACE_EXISTING}<a name="line.785"></a>
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<span class="sourceLineNo">789</span>    /**<a name="line.789"></a>
<span class="sourceLineNo">790</span>     * Copies a file to a new location.<a name="line.790"></a>
<span class="sourceLineNo">791</span>     * &lt;p&gt;<a name="line.791"></a>
<span class="sourceLineNo">792</span>     * This method copies the contents of the specified source file to the specified destination file. The directory<a name="line.792"></a>
<span class="sourceLineNo">793</span>     * holding the destination file is created if it does not exist. If the destination file exists, you can overwrite<a name="line.793"></a>
<span class="sourceLineNo">794</span>     * it with {@link StandardCopyOption#REPLACE_EXISTING}.<a name="line.794"></a>
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<span class="sourceLineNo">796</span>     * &lt;p&gt;<a name="line.796"></a>
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<span class="sourceLineNo">798</span>     * modified date/times using {@link File#setLastModified(long)}, however it is not guaranteed that the operation<a name="line.798"></a>
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<span class="sourceLineNo">804</span>     * @param preserveFileDate true if the file date of the copy should be the same as the original.<a name="line.804"></a>
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<span class="sourceLineNo">815</span>        throws IOException {<a name="line.815"></a>
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<span class="sourceLineNo">819</span>    /**<a name="line.819"></a>
<span class="sourceLineNo">820</span>     * Copies a file to a new location.<a name="line.820"></a>
<span class="sourceLineNo">821</span>     * &lt;p&gt;<a name="line.821"></a>
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<span class="sourceLineNo">823</span>     * holding the destination file is created if it does not exist. If the destination file exists, you can overwrite<a name="line.823"></a>
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<span class="sourceLineNo">826</span>     *<a name="line.826"></a>
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<span class="sourceLineNo">835</span>     * @see StandardCopyOption<a name="line.835"></a>
<span class="sourceLineNo">836</span>     * @since 2.9.0<a name="line.836"></a>
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<span class="sourceLineNo">839</span>        throws IOException {<a name="line.839"></a>
<span class="sourceLineNo">840</span>        requireFileCopy(srcFile, destFile);<a name="line.840"></a>
<span class="sourceLineNo">841</span>        requireFile(srcFile, "srcFile");<a name="line.841"></a>
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<span class="sourceLineNo">843</span>        createParentDirectories(destFile);<a name="line.843"></a>
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<span class="sourceLineNo">849</span>        // On Windows, the last modified time is copied by default.<a name="line.849"></a>
<span class="sourceLineNo">850</span>        Files.copy(srcFile.toPath(), destFile.toPath(), copyOptions);<a name="line.850"></a>
<span class="sourceLineNo">851</span><a name="line.851"></a>
<span class="sourceLineNo">852</span>        // TODO IO-386: Do we still need this check?<a name="line.852"></a>
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<span class="sourceLineNo">855</span><a name="line.855"></a>
<span class="sourceLineNo">856</span>    /**<a name="line.856"></a>
<span class="sourceLineNo">857</span>     * Copies bytes from a {@code File} to an {@code OutputStream}.<a name="line.857"></a>
<span class="sourceLineNo">858</span>     * &lt;p&gt;<a name="line.858"></a>
<span class="sourceLineNo">859</span>     * This method buffers the input internally, so there is no need to use a {@code BufferedInputStream}.<a name="line.859"></a>
<span class="sourceLineNo">860</span>     * &lt;/p&gt;<a name="line.860"></a>
<span class="sourceLineNo">861</span>     *<a name="line.861"></a>
<span class="sourceLineNo">862</span>     * @param input  the {@code File} to read.<a name="line.862"></a>
<span class="sourceLineNo">863</span>     * @param output the {@code OutputStream} to write.<a name="line.863"></a>
<span class="sourceLineNo">864</span>     * @return the number of bytes copied<a name="line.864"></a>
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<span class="sourceLineNo">866</span>     * @throws NullPointerException if the OutputStream is {@code null}.<a name="line.866"></a>
<span class="sourceLineNo">867</span>     * @throws IOException          if an I/O error occurs.<a name="line.867"></a>
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<span class="sourceLineNo">876</span>    /**<a name="line.876"></a>
<span class="sourceLineNo">877</span>     * Copies a file to a directory preserving the file date.<a name="line.877"></a>
<span class="sourceLineNo">878</span>     * &lt;p&gt;<a name="line.878"></a>
<span class="sourceLineNo">879</span>     * This method copies the contents of the specified source file to a file of the same name in the specified<a name="line.879"></a>
<span class="sourceLineNo">880</span>     * destination directory. The destination directory is created if it does not exist. If the destination file exists,<a name="line.880"></a>
<span class="sourceLineNo">881</span>     * then this method will overwrite it.<a name="line.881"></a>
<span class="sourceLineNo">882</span>     * &lt;/p&gt;<a name="line.882"></a>
<span class="sourceLineNo">883</span>     * &lt;p&gt;<a name="line.883"></a>
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<span class="sourceLineNo">885</span>     * {@link File#setLastModified(long)}, however it is not guaranteed that the operation will succeed. If the<a name="line.885"></a>
<span class="sourceLineNo">886</span>     * modification operation fails, the methods throws IOException.<a name="line.886"></a>
<span class="sourceLineNo">887</span>     * &lt;/p&gt;<a name="line.887"></a>
<span class="sourceLineNo">888</span>     *<a name="line.888"></a>
<span class="sourceLineNo">889</span>     * @param srcFile an existing file to copy, must not be {@code null}.<a name="line.889"></a>
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<span class="sourceLineNo">892</span>     * @throws IllegalArgumentException if source or destination is invalid.<a name="line.892"></a>
<span class="sourceLineNo">893</span>     * @throws IOException if an error occurs or setting the last-modified time didn't succeeded.<a name="line.893"></a>
<span class="sourceLineNo">894</span>     * @see #copyFile(File, File, boolean)<a name="line.894"></a>
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<span class="sourceLineNo">901</span>     * Copies a file to a directory optionally preserving the file date.<a name="line.901"></a>
<span class="sourceLineNo">902</span>     * &lt;p&gt;<a name="line.902"></a>
<span class="sourceLineNo">903</span>     * This method copies the contents of the specified source file to a file of the same name in the specified<a name="line.903"></a>
<span class="sourceLineNo">904</span>     * destination directory. The destination directory is created if it does not exist. If the destination file exists,<a name="line.904"></a>
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<span class="sourceLineNo">907</span>     * &lt;p&gt;<a name="line.907"></a>
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<span class="sourceLineNo">909</span>     * modified date/times using {@link File#setLastModified(long)}, however it is not guaranteed that the operation<a name="line.909"></a>
<span class="sourceLineNo">910</span>     * will succeed. If the modification operation fails, the methods throws IOException.<a name="line.910"></a>
<span class="sourceLineNo">911</span>     * &lt;/p&gt;<a name="line.911"></a>
<span class="sourceLineNo">912</span>     *<a name="line.912"></a>
<span class="sourceLineNo">913</span>     * @param sourceFile an existing file to copy, must not be {@code null}.<a name="line.913"></a>
<span class="sourceLineNo">914</span>     * @param destinationDir the directory to place the copy in, must not be {@code null}.<a name="line.914"></a>
<span class="sourceLineNo">915</span>     * @param preserveFileDate true if the file date of the copy should be the same as the original.<a name="line.915"></a>
<span class="sourceLineNo">916</span>     * @throws NullPointerException if any of the given {@code File}s are {@code null}.<a name="line.916"></a>
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<span class="sourceLineNo">931</span>     * {@code destination}. The directories up to {@code destination}<a name="line.931"></a>
<span class="sourceLineNo">932</span>     * will be created if they don't already exist. {@code destination}<a name="line.932"></a>
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<span class="sourceLineNo">934</span>     * &lt;p&gt;<a name="line.934"></a>
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<span class="sourceLineNo">940</span>     *<a name="line.940"></a>
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<span class="sourceLineNo">945</span>     * @throws IOException if {@code destination} cannot be written<a name="line.945"></a>
<span class="sourceLineNo">946</span>     * @throws IOException if {@code destination} needs creating but can't be<a name="line.946"></a>
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<span class="sourceLineNo">955</span><a name="line.955"></a>
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<span class="sourceLineNo">957</span>     * Copies a file or directory to within another directory preserving the file dates.<a name="line.957"></a>
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<span class="sourceLineNo">994</span>     * Copies a files to a directory preserving each file's date.<a name="line.994"></a>
<span class="sourceLineNo">995</span>     * &lt;p&gt;<a name="line.995"></a>
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<span class="sourceLineNo">1001</span>     * &lt;p&gt;<a name="line.1001"></a>
<span class="sourceLineNo">1002</span>     * &lt;strong&gt;Note:&lt;/strong&gt; This method tries to preserve the file's last<a name="line.1002"></a>
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<span class="sourceLineNo">1005</span>     * If the modification operation fails, the methods throws IOException.<a name="line.1005"></a>
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<span class="sourceLineNo">1007</span>     *<a name="line.1007"></a>
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<span class="sourceLineNo">1011</span>     * @throws IOException if source or destination is invalid.<a name="line.1011"></a>
<span class="sourceLineNo">1012</span>     * @throws IOException if an error occurs or setting the last-modified time didn't succeeded.<a name="line.1012"></a>
<span class="sourceLineNo">1013</span>     * @see #copyFileToDirectory(File, File)<a name="line.1013"></a>
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<span class="sourceLineNo">1025</span>     * up to {@code destination} will be created if they don't already exist. {@code destination} will be<a name="line.1025"></a>
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<span class="sourceLineNo">1027</span>     * {@link java.util.zip.ZipInputStream ZipInputStream}. See {@link #copyInputStreamToFile(InputStream, File)} for a<a name="line.1027"></a>
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<span class="sourceLineNo">1029</span>     *<a name="line.1029"></a>
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<span class="sourceLineNo">1031</span>     * @param file the non-directory {@code File} to write bytes to (possibly overwriting), must not be<a name="line.1031"></a>
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<span class="sourceLineNo">1049</span>     * {@code destination}. The directories up to {@code destination}<a name="line.1049"></a>
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<span class="sourceLineNo">1057</span>     *<a name="line.1057"></a>
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<span class="sourceLineNo">1064</span>     * @throws IOException if {@code destination} needs creating but can't be<a name="line.1064"></a>
<span class="sourceLineNo">1065</span>     * @throws IOException if an IO error occurs during copying<a name="line.1065"></a>
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<span class="sourceLineNo">1073</span>    /**<a name="line.1073"></a>
<span class="sourceLineNo">1074</span>     * Copies bytes from the URL {@code source} to a file {@code destination}. The directories up to<a name="line.1074"></a>
<span class="sourceLineNo">1075</span>     * {@code destination} will be created if they don't already exist. {@code destination} will be<a name="line.1075"></a>
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<span class="sourceLineNo">1077</span>     *<a name="line.1077"></a>
<span class="sourceLineNo">1078</span>     * @param source the {@code URL} to copy bytes from, must not be {@code null}<a name="line.1078"></a>
<span class="sourceLineNo">1079</span>     * @param destination the non-directory {@code File} to write bytes to (possibly overwriting), must not be<a name="line.1079"></a>
<span class="sourceLineNo">1080</span>     *        {@code null}<a name="line.1080"></a>
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<span class="sourceLineNo">1083</span>     * @param readTimeoutMillis the number of milliseconds until this method will timeout if no data could be read from<a name="line.1083"></a>
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<span class="sourceLineNo">1088</span>     * @throws IOException if {@code destination} needs creating but can't be<a name="line.1088"></a>
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<span class="sourceLineNo">1102</span><a name="line.1102"></a>
<span class="sourceLineNo">1103</span>    /**<a name="line.1103"></a>
<span class="sourceLineNo">1104</span>     * Creates all parent directories for a File object.<a name="line.1104"></a>
<span class="sourceLineNo">1105</span>     *<a name="line.1105"></a>
<span class="sourceLineNo">1106</span>     * @param file the File that may need parents, may be null.<a name="line.1106"></a>
<span class="sourceLineNo">1107</span>     * @return The parent directory, or {@code null} if the given file does not name a parent<a name="line.1107"></a>
<span class="sourceLineNo">1108</span>     * @throws IOException if the directory was not created along with all its parent directories.<a name="line.1108"></a>
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<span class="sourceLineNo">1110</span>     * @since 2.9.0<a name="line.1110"></a>
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<span class="sourceLineNo">1118</span>     * percent-encoded octets to characters by decoding with the UTF-8 character<a name="line.1118"></a>
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<span class="sourceLineNo">1120</span>     * {@link java.net.URL} which unfortunately does not enforce proper URLs. As<a name="line.1120"></a>
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<span class="sourceLineNo">1122</span>     * percent-encoded octets and simply pass them literally through to the<a name="line.1122"></a>
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<span class="sourceLineNo">1125</span>     *<a name="line.1125"></a>
<span class="sourceLineNo">1126</span>     * @param url The URL to decode, may be {@code null}.<a name="line.1126"></a>
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<span class="sourceLineNo">1620</span>     * {@code ChronoZonedDateTime}.<a name="line.1620"></a>
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<span class="sourceLineNo">1622</span>     *<a name="line.1622"></a>
<span class="sourceLineNo">1623</span>     * @since 2.8.0<a name="line.1623"></a>
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<span class="sourceLineNo">1650</span>     * recently than the reference {@code File}.<a name="line.1650"></a>
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<span class="sourceLineNo">1667</span>     * @since 2.8.0<a name="line.1667"></a>
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<span class="sourceLineNo">1678</span>     * @param timeMillis the time reference measured in milliseconds since the<a name="line.1678"></a>
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<span class="sourceLineNo">1704</span>     * @see LocalTime#now()<a name="line.1704"></a>
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<span class="sourceLineNo">1728</span>     *<a name="line.1728"></a>
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<span class="sourceLineNo">1739</span>     * at the system-default time zone.<a name="line.1739"></a>
<span class="sourceLineNo">1740</span>     *<a name="line.1740"></a>
<span class="sourceLineNo">1741</span>     * &lt;p&gt;Note: The input date and time is assumed to be in the system default time-zone. To use a<a name="line.1741"></a>
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<span class="sourceLineNo">1749</span>     * {@code ChronoLocalDateTime} at the system-default time zone.<a name="line.1749"></a>
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<span class="sourceLineNo">1751</span>     * @see ZoneId#systemDefault()<a name="line.1751"></a>
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<span class="sourceLineNo">1761</span>     * at the specified {@code ZoneId}.<a name="line.1761"></a>
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<span class="sourceLineNo">1769</span>     *<a name="line.1769"></a>
<span class="sourceLineNo">1770</span>     * @since 2.8.0<a name="line.1770"></a>
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<span class="sourceLineNo">1784</span>     * {@code ChronoZonedDateTime}.<a name="line.1784"></a>
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<span class="sourceLineNo">1786</span>     *<a name="line.1786"></a>
<span class="sourceLineNo">1787</span>     * @since 2.8.0<a name="line.1787"></a>
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<span class="sourceLineNo">1963</span>     * Use this method to avoid issues with {@link File#lastModified()} like<a name="line.1963"></a>
<span class="sourceLineNo">1964</span>     * &lt;a href="https://bugs.openjdk.java.net/browse/JDK-8177809"&gt;JDK-8177809&lt;/a&gt; where {@link File#lastModified()} is<a name="line.1964"></a>
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<span class="sourceLineNo">1975</span>        // File.lastModified() is losing milliseconds (always ends in 000)<a name="line.1975"></a>
<span class="sourceLineNo">1976</span>        // This bug is in OpenJDK 8 and 9, and fixed in 10.<a name="line.1976"></a>
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<span class="sourceLineNo">1984</span>     * Use this method to avoid issues with {@link File#lastModified()} like<a name="line.1984"></a>
<span class="sourceLineNo">1985</span>     * &lt;a href="https://bugs.openjdk.java.net/browse/JDK-8177809"&gt;JDK-8177809&lt;/a&gt; where {@link File#lastModified()} is<a name="line.1985"></a>
<span class="sourceLineNo">1986</span>     * losing milliseconds (always ends in 000). This bug exists in OpenJDK 8 and 9, and is fixed in 10.<a name="line.1986"></a>
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<span class="sourceLineNo">1996</span>        // File.lastModified() is losing milliseconds (always ends in 000)<a name="line.1996"></a>
<span class="sourceLineNo">1997</span>        // This bug is in OpenJDK 8 and 9, and fixed in 10.<a name="line.1997"></a>
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<span class="sourceLineNo">2007</span>     *<a name="line.2007"></a>
<span class="sourceLineNo">2008</span>     * @param file the file to open for input, must not be {@code null}<a name="line.2008"></a>
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<span class="sourceLineNo">2011</span>     * @throws FileNotFoundException if the file does not exist, is a directory rather than a regular file, or for some<a name="line.2011"></a>
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<span class="sourceLineNo">2013</span>     * @throws IOException if an I/O error occurs.<a name="line.2013"></a>
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<span class="sourceLineNo">2023</span>     * &lt;p&gt;<a name="line.2023"></a>
<span class="sourceLineNo">2024</span>     * This method opens an {@code InputStream} for the file.<a name="line.2024"></a>
<span class="sourceLineNo">2025</span>     * When you have finished with the iterator you should close the stream<a name="line.2025"></a>
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<span class="sourceLineNo">2030</span>     * &lt;p&gt;<a name="line.2030"></a>
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<span class="sourceLineNo">2033</span>     * &lt;pre&gt;<a name="line.2033"></a>
<span class="sourceLineNo">2034</span>     * LineIterator it = FileUtils.lineIterator(file, "UTF-8");<a name="line.2034"></a>
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<span class="sourceLineNo">2036</span>     *   while (it.hasNext()) {<a name="line.2036"></a>
<span class="sourceLineNo">2037</span>     *     String line = it.nextLine();<a name="line.2037"></a>
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<span class="sourceLineNo">2043</span>     * &lt;/pre&gt;<a name="line.2043"></a>
<span class="sourceLineNo">2044</span>     * &lt;p&gt;<a name="line.2044"></a>
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<span class="sourceLineNo">2046</span>     * underlying stream is closed.<a name="line.2046"></a>
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<span class="sourceLineNo">2087</span>     * @throws IllegalArgumentException if directory does not exist or is not a directory.<a name="line.2087"></a>
<span class="sourceLineNo">2088</span>     * @throws IOException if an I/O error occurs.<a name="line.2088"></a>
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<span class="sourceLineNo">2101</span>     * Finds files within a given directory (and optionally its<a name="line.2101"></a>
<span class="sourceLineNo">2102</span>     * subdirectories). All files found are filtered by an IOFileFilter.<a name="line.2102"></a>
<span class="sourceLineNo">2103</span>     * &lt;p&gt;<a name="line.2103"></a>
<span class="sourceLineNo">2104</span>     * If your search should recurse into subdirectories you can pass in<a name="line.2104"></a>
<span class="sourceLineNo">2105</span>     * an IOFileFilter for directories. You don't need to bind a<a name="line.2105"></a>
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<span class="sourceLineNo">2107</span>     * that for you.<a name="line.2107"></a>
<span class="sourceLineNo">2108</span>     * &lt;/p&gt;<a name="line.2108"></a>
<span class="sourceLineNo">2109</span>     * &lt;p&gt;<a name="line.2109"></a>
<span class="sourceLineNo">2110</span>     * An example: If you want to search through all directories called<a name="line.2110"></a>
<span class="sourceLineNo">2111</span>     * "temp" you pass in {@code FileFilterUtils.NameFileFilter("temp")}<a name="line.2111"></a>
<span class="sourceLineNo">2112</span>     * &lt;/p&gt;<a name="line.2112"></a>
<span class="sourceLineNo">2113</span>     * &lt;p&gt;<a name="line.2113"></a>
<span class="sourceLineNo">2114</span>     * Another common usage of this method is find files in a directory<a name="line.2114"></a>
<span class="sourceLineNo">2115</span>     * tree but ignoring the directories generated CVS. You can simply pass<a name="line.2115"></a>
<span class="sourceLineNo">2116</span>     * in {@code FileFilterUtils.makeCVSAware(null)}.<a name="line.2116"></a>
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<span class="sourceLineNo">2118</span>     *<a name="line.2118"></a>
<span class="sourceLineNo">2119</span>     * @param directory  the directory to search in<a name="line.2119"></a>
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<span class="sourceLineNo">2127</span>     * @see org.apache.commons.io.filefilter.NameFileFilter<a name="line.2127"></a>
<span class="sourceLineNo">2128</span>     */<a name="line.2128"></a>
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<span class="sourceLineNo">2142</span>     *<a name="line.2142"></a>
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<span class="sourceLineNo">2159</span>     * subdirectories). All files found are filtered by an IOFileFilter.<a name="line.2159"></a>
<span class="sourceLineNo">2160</span>     * &lt;p&gt;<a name="line.2160"></a>
<span class="sourceLineNo">2161</span>     * The resulting collection includes the starting directory and<a name="line.2161"></a>
<span class="sourceLineNo">2162</span>     * any subdirectories that match the directory filter.<a name="line.2162"></a>
<span class="sourceLineNo">2163</span>     * &lt;/p&gt;<a name="line.2163"></a>
<span class="sourceLineNo">2164</span>     *<a name="line.2164"></a>
<span class="sourceLineNo">2165</span>     * @param directory  the directory to search in<a name="line.2165"></a>
<span class="sourceLineNo">2166</span>     * @param fileFilter filter to apply when finding files.<a name="line.2166"></a>
<span class="sourceLineNo">2167</span>     * @param dirFilter  optional filter to apply when finding subdirectories.<a name="line.2167"></a>
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<span class="sourceLineNo">2171</span>     * @see org.apache.commons.io.FileUtils#listFiles<a name="line.2171"></a>
<span class="sourceLineNo">2172</span>     * @see org.apache.commons.io.filefilter.FileFilterUtils<a name="line.2172"></a>
<span class="sourceLineNo">2173</span>     * @see org.apache.commons.io.filefilter.NameFileFilter<a name="line.2173"></a>
<span class="sourceLineNo">2174</span>     * @since 2.2<a name="line.2174"></a>
<span class="sourceLineNo">2175</span>     */<a name="line.2175"></a>
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<span class="sourceLineNo">2189</span>     * Calls {@link File#mkdirs()} and throws an exception on failure.<a name="line.2189"></a>
<span class="sourceLineNo">2190</span>     *<a name="line.2190"></a>
<span class="sourceLineNo">2191</span>     * @param directory the receiver for {@code mkdirs()}, may be null.<a name="line.2191"></a>
<span class="sourceLineNo">2192</span>     * @return the given file, may be null.<a name="line.2192"></a>
<span class="sourceLineNo">2193</span>     * @throws IOException if the directory was not created along with all its parent directories.<a name="line.2193"></a>
<span class="sourceLineNo">2194</span>     * @throws IOException if the given file object is not a directory.<a name="line.2194"></a>
<span class="sourceLineNo">2195</span>     * @throws SecurityException See {@link File#mkdirs()}.<a name="line.2195"></a>
<span class="sourceLineNo">2196</span>     * @see File#mkdirs()<a name="line.2196"></a>
<span class="sourceLineNo">2197</span>     */<a name="line.2197"></a>
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<span class="sourceLineNo">2207</span>     * &lt;p&gt;<a name="line.2207"></a>
<span class="sourceLineNo">2208</span>     * When the destination directory is on another file system, do a "copy and delete".<a name="line.2208"></a>
<span class="sourceLineNo">2209</span>     * &lt;/p&gt;<a name="line.2209"></a>
<span class="sourceLineNo">2210</span>     *<a name="line.2210"></a>
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<span class="sourceLineNo">2214</span>     * @throws IllegalArgumentException if the source or destination is invalid.<a name="line.2214"></a>
<span class="sourceLineNo">2215</span>     * @throws FileNotFoundException if the source does not exist.<a name="line.2215"></a>
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<span class="sourceLineNo">2238</span>     *<a name="line.2238"></a>
<span class="sourceLineNo">2239</span>     * @param src the file to be moved.<a name="line.2239"></a>
<span class="sourceLineNo">2240</span>     * @param destDir the destination file.<a name="line.2240"></a>
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<span class="sourceLineNo">2244</span>     * @throws IllegalArgumentException if the source or destination is invalid.<a name="line.2244"></a>
<span class="sourceLineNo">2245</span>     * @throws FileNotFoundException if the source does not exist.<a name="line.2245"></a>
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<span class="sourceLineNo">2592</span>    /**<a name="line.2592"></a>
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<span class="sourceLineNo">2658</span>     * @param directory The {@code File} to check.<a name="line.2658"></a>
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<span class="sourceLineNo">2690</span>     * Requires that the given {@code File} exists and throws an {@link IllegalArgumentException} if it doesn't.<a name="line.2690"></a>
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<span class="sourceLineNo">2694</span>     * @return the given file.<a name="line.2694"></a>
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<span class="sourceLineNo">3167</span>     * Writes a CharSequence to a file creating the file if it does not exist using the default encoding for the VM.<a name="line.3167"></a>
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<span class="sourceLineNo">3169</span>     * @param file the file to write<a name="line.3169"></a>
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<span class="sourceLineNo">3171</span>     * @throws IOException in case of an I/O error<a name="line.3171"></a>
<span class="sourceLineNo">3172</span>     * @since 2.0<a name="line.3172"></a>
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<span class="sourceLineNo">3183</span>     * @param file   the file to write<a name="line.3183"></a>
<span class="sourceLineNo">3184</span>     * @param data   the content to write to the file<a name="line.3184"></a>
<span class="sourceLineNo">3185</span>     * @param append if {@code true}, then the data will be added to the<a name="line.3185"></a>
<span class="sourceLineNo">3186</span>     *               end of the file rather than overwriting<a name="line.3186"></a>
<span class="sourceLineNo">3187</span>     * @throws IOException in case of an I/O error<a name="line.3187"></a>
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<span class="sourceLineNo">3198</span>     *<a name="line.3198"></a>
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<span class="sourceLineNo">3209</span>    /**<a name="line.3209"></a>
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<span class="sourceLineNo">3211</span>     *<a name="line.3211"></a>
<span class="sourceLineNo">3212</span>     * @param file     the file to write<a name="line.3212"></a>
<span class="sourceLineNo">3213</span>     * @param data     the content to write to the file<a name="line.3213"></a>
<span class="sourceLineNo">3214</span>     * @param charset the charset to use, {@code null} means platform default<a name="line.3214"></a>
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<span class="sourceLineNo">3227</span>    /**<a name="line.3227"></a>
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<span class="sourceLineNo">3241</span>    /**<a name="line.3241"></a>
<span class="sourceLineNo">3242</span>     * Writes a CharSequence to a file creating the file if it does not exist.<a name="line.3242"></a>
<span class="sourceLineNo">3243</span>     *<a name="line.3243"></a>
<span class="sourceLineNo">3244</span>     * @param file     the file to write<a name="line.3244"></a>
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<span class="sourceLineNo">3248</span>     *                 end of the file rather than overwriting<a name="line.3248"></a>
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<span class="sourceLineNo">3261</span>     * &lt;p&gt;<a name="line.3261"></a>
<span class="sourceLineNo">3262</span>     * NOTE: As from v1.3, the parent directories of the file will be created<a name="line.3262"></a>
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<span class="sourceLineNo">3277</span>    /**<a name="line.3277"></a>
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<span class="sourceLineNo">3279</span>     *<a name="line.3279"></a>
<span class="sourceLineNo">3280</span>     * @param file   the file to write to<a name="line.3280"></a>
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<span class="sourceLineNo">3282</span>     * @param append if {@code true}, then bytes will be added to the<a name="line.3282"></a>
<span class="sourceLineNo">3283</span>     *               end of the file rather than overwriting<a name="line.3283"></a>
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<span class="sourceLineNo">3309</span>    /**<a name="line.3309"></a>
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<span class="sourceLineNo">3311</span>     * at offset {@code off} to a file, creating the file if it does<a name="line.3311"></a>
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<span class="sourceLineNo">3313</span>     *<a name="line.3313"></a>
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<span class="sourceLineNo">3330</span>    /**<a name="line.3330"></a>
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<span class="sourceLineNo">3332</span>     * the specified {@code File} line by line.<a name="line.3332"></a>
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<span class="sourceLineNo">3344</span>    /**<a name="line.3344"></a>
<span class="sourceLineNo">3345</span>     * Writes the {@code toString()} value of each item in a collection to<a name="line.3345"></a>
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<span class="sourceLineNo">3381</span>     *<a name="line.3381"></a>
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<span class="sourceLineNo">3416</span>    /**<a name="line.3416"></a>
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<span class="sourceLineNo">3419</span>     * The specified character encoding and the default line ending will be used.<a name="line.3419"></a>
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<span class="sourceLineNo">3435</span>    /**<a name="line.3435"></a>
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<span class="sourceLineNo">3437</span>     * the specified {@code File} line by line.<a name="line.3437"></a>
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<span class="sourceLineNo">3457</span>    /**<a name="line.3457"></a>
<span class="sourceLineNo">3458</span>     * Writes the {@code toString()} value of each item in a collection to<a name="line.3458"></a>
<span class="sourceLineNo">3459</span>     * the specified {@code File} line by line.<a name="line.3459"></a>
<span class="sourceLineNo">3460</span>     * The specified character encoding and the line ending will be used.<a name="line.3460"></a>
<span class="sourceLineNo">3461</span>     *<a name="line.3461"></a>
<span class="sourceLineNo">3462</span>     * @param file       the file to write to<a name="line.3462"></a>
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<span class="sourceLineNo">3473</span>                                  final String lineEnding, final boolean append) throws IOException {<a name="line.3473"></a>
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<span class="sourceLineNo">3475</span>            IOUtils.writeLines(lines, lineEnding, out, charsetName);<a name="line.3475"></a>
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<span class="sourceLineNo">3479</span>    /**<a name="line.3479"></a>
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<span class="sourceLineNo">3481</span>     *<a name="line.3481"></a>
<span class="sourceLineNo">3482</span>     * @param file the file to write<a name="line.3482"></a>
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<span class="sourceLineNo">3492</span>    /**<a name="line.3492"></a>
<span class="sourceLineNo">3493</span>     * Writes a String to a file creating the file if it does not exist using the default encoding for the VM.<a name="line.3493"></a>
<span class="sourceLineNo">3494</span>     *<a name="line.3494"></a>
<span class="sourceLineNo">3495</span>     * @param file   the file to write<a name="line.3495"></a>
<span class="sourceLineNo">3496</span>     * @param data   the content to write to the file<a name="line.3496"></a>
<span class="sourceLineNo">3497</span>     * @param append if {@code true}, then the String will be added to the<a name="line.3497"></a>
<span class="sourceLineNo">3498</span>     *               end of the file rather than overwriting<a name="line.3498"></a>
<span class="sourceLineNo">3499</span>     * @throws IOException in case of an I/O error<a name="line.3499"></a>
<span class="sourceLineNo">3500</span>     * @since 2.1<a name="line.3500"></a>
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<span class="sourceLineNo">3503</span>    @Deprecated<a name="line.3503"></a>
<span class="sourceLineNo">3504</span>    public static void writeStringToFile(final File file, final String data, final boolean append) throws IOException {<a name="line.3504"></a>
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<span class="sourceLineNo">3507</span><a name="line.3507"></a>
<span class="sourceLineNo">3508</span>    /**<a name="line.3508"></a>
<span class="sourceLineNo">3509</span>     * Writes a String to a file creating the file if it does not exist.<a name="line.3509"></a>
<span class="sourceLineNo">3510</span>     * &lt;p&gt;<a name="line.3510"></a>
<span class="sourceLineNo">3511</span>     * NOTE: As from v1.3, the parent directories of the file will be created<a name="line.3511"></a>
<span class="sourceLineNo">3512</span>     * if they do not exist.<a name="line.3512"></a>
<span class="sourceLineNo">3513</span>     * &lt;/p&gt;<a name="line.3513"></a>
<span class="sourceLineNo">3514</span>     *<a name="line.3514"></a>
<span class="sourceLineNo">3515</span>     * @param file     the file to write<a name="line.3515"></a>
<span class="sourceLineNo">3516</span>     * @param data     the content to write to the file<a name="line.3516"></a>
<span class="sourceLineNo">3517</span>     * @param charset the charset to use, {@code null} means platform default<a name="line.3517"></a>
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<span class="sourceLineNo">3519</span>     * @throws java.io.UnsupportedEncodingException if the encoding is not supported by the VM<a name="line.3519"></a>
<span class="sourceLineNo">3520</span>     * @since 2.4<a name="line.3520"></a>
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<span class="sourceLineNo">3523</span>            throws IOException {<a name="line.3523"></a>
<span class="sourceLineNo">3524</span>        writeStringToFile(file, data, charset, false);<a name="line.3524"></a>
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<span class="sourceLineNo">3526</span><a name="line.3526"></a>
<span class="sourceLineNo">3527</span>    /**<a name="line.3527"></a>
<span class="sourceLineNo">3528</span>     * Writes a String to a file creating the file if it does not exist.<a name="line.3528"></a>
<span class="sourceLineNo">3529</span>     *<a name="line.3529"></a>
<span class="sourceLineNo">3530</span>     * @param file     the file to write<a name="line.3530"></a>
<span class="sourceLineNo">3531</span>     * @param data     the content to write to the file<a name="line.3531"></a>
<span class="sourceLineNo">3532</span>     * @param charset the charset to use, {@code null} means platform default<a name="line.3532"></a>
<span class="sourceLineNo">3533</span>     * @param append   if {@code true}, then the String will be added to the<a name="line.3533"></a>
<span class="sourceLineNo">3534</span>     *                 end of the file rather than overwriting<a name="line.3534"></a>
<span class="sourceLineNo">3535</span>     * @throws IOException in case of an I/O error<a name="line.3535"></a>
<span class="sourceLineNo">3536</span>     * @since 2.3<a name="line.3536"></a>
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<span class="sourceLineNo">3538</span>    public static void writeStringToFile(final File file, final String data, final Charset charset,<a name="line.3538"></a>
<span class="sourceLineNo">3539</span>                                         final boolean append) throws IOException {<a name="line.3539"></a>
<span class="sourceLineNo">3540</span>        try (OutputStream out = openOutputStream(file, append)) {<a name="line.3540"></a>
<span class="sourceLineNo">3541</span>            IOUtils.write(data, out, charset);<a name="line.3541"></a>
<span class="sourceLineNo">3542</span>        }<a name="line.3542"></a>
<span class="sourceLineNo">3543</span>    }<a name="line.3543"></a>
<span class="sourceLineNo">3544</span><a name="line.3544"></a>
<span class="sourceLineNo">3545</span>    /**<a name="line.3545"></a>
<span class="sourceLineNo">3546</span>     * Writes a String to a file creating the file if it does not exist.<a name="line.3546"></a>
<span class="sourceLineNo">3547</span>     * &lt;p&gt;<a name="line.3547"></a>
<span class="sourceLineNo">3548</span>     * NOTE: As from v1.3, the parent directories of the file will be created<a name="line.3548"></a>
<span class="sourceLineNo">3549</span>     * if they do not exist.<a name="line.3549"></a>
<span class="sourceLineNo">3550</span>     * &lt;/p&gt;<a name="line.3550"></a>
<span class="sourceLineNo">3551</span>     *<a name="line.3551"></a>
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<span class="sourceLineNo">3553</span>     * @param data     the content to write to the file<a name="line.3553"></a>
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<span class="sourceLineNo">3558</span>    public static void writeStringToFile(final File file, final String data, final String charsetName) throws IOException {<a name="line.3558"></a>
<span class="sourceLineNo">3559</span>        writeStringToFile(file, data, charsetName, false);<a name="line.3559"></a>
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<span class="sourceLineNo">3562</span>    /**<a name="line.3562"></a>
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<span class="sourceLineNo">3564</span>     *<a name="line.3564"></a>
<span class="sourceLineNo">3565</span>     * @param file     the file to write<a name="line.3565"></a>
<span class="sourceLineNo">3566</span>     * @param data     the content to write to the file<a name="line.3566"></a>
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<span class="sourceLineNo">3568</span>     * @param append   if {@code true}, then the String will be added to the<a name="line.3568"></a>
<span class="sourceLineNo">3569</span>     *                 end of the file rather than overwriting<a name="line.3569"></a>
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<span class="sourceLineNo">3571</span>     * @throws java.nio.charset.UnsupportedCharsetException thrown instead of {@link java.io<a name="line.3571"></a>
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<span class="sourceLineNo">3577</span>        writeStringToFile(file, data, Charsets.toCharset(charsetName), append);<a name="line.3577"></a>
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<span class="sourceLineNo">3579</span><a name="line.3579"></a>
<span class="sourceLineNo">3580</span>    /**<a name="line.3580"></a>
<span class="sourceLineNo">3581</span>     * Instances should NOT be constructed in standard programming.<a name="line.3581"></a>
<span class="sourceLineNo">3582</span>     * @deprecated Will be private in 3.0.<a name="line.3582"></a>
<span class="sourceLineNo">3583</span>     */<a name="line.3583"></a>
<span class="sourceLineNo">3584</span>    @Deprecated<a name="line.3584"></a>
<span class="sourceLineNo">3585</span>    public FileUtils() { //NOSONAR<a name="line.3585"></a>
<span class="sourceLineNo">3586</span><a name="line.3586"></a>
<span class="sourceLineNo">3587</span>    }<a name="line.3587"></a>
<span class="sourceLineNo">3588</span>}<a name="line.3588"></a>




























































</pre>
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